Photographic-printing apparatus.



I PATENTED Jmmz, 1908. A. 'GOTTILLON. PHOTOGRAPHIO PRINTING APPARATUS. I

APPLICATION FILED JAN. 29, 1907.

2 sums-1511122151.

Y v PATENTED JUNE 2, 1908-. a r A. GOTTILLON. I

PHOTOGRAPHIG PRINTING APPARATUS. APPLIIOATION FILED JAN. 29, 1907.

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ADRIEN COTTILLON, OF ASNIERES, FRANCE.

PHOTOGRAPHIG-PRINTIN APPARATUS.

Specification of Letters Patent.

Patented June 2, 1908.

Application filed January 29, 1907. Serial No. 354,771.

To all whom it may concern:

Be it known that I, ADRIEN CoTTILLoN, a citizen of the Republic ofFrance, and resident of Asnires, in France, have invented certain newand useful Improvements in hoto raphic-Printin A paratus, of which '0 'ef0 lowing is a full, cl dar, and exact description.

This invention has for its object an a paratus which allows the rapidand un' orm printing of positive photogra hs obtained by gelatinobromid. The sai a paratus includes a closed box containing e ectriclamps located under athick glass su porting the negatives to be printedupon w 1ch the bromid paper is placed.-

The pressure necessary for the contact of the paper on the negatives isobtained by means of electro-magnets, which draw the cover downwards,such pressure, as well as the ignition of the lamps, being effected by adistrlbuter of electric current, so constructed as to be capable ofcausing the time of exposure to be easily varied according to thenegatives to be printed and the rapidity of the paper used.

he'apparatus is shown in the accompanying drawings, in which Figure 1 isa front view. Fig. 2, a cross section. Fig. 3, a vertical section of theparts seen in Fi 1 slightly enlarged. Fig. 4, a plan of the eft handortion of Fi 1. Fig. 5, an exterior view 0 one of the sides. Fig. 6shows, on an enlarged scale, the details of the construction of thepressure plate. Fig. 7 shows the details of the fittings of one of thebrushes taking the current. Fi 8 and 9 show in elevation and plan amodification of the current distributer.

The a paratus consists of a rectangular wooden ox A mounted on feet B,in which box are arranged electric lamps O, which can be changed asdesired by opening'a hinged door D provided in the front.

In the recess formed in the upper part of the box is located a thickglass a upon which are laced the negatives to be p)rinted from. Saidglass is arranged so as to e capable of being withdrawn from the back ofthe apparatus by raisin a movable part b. It can also be removed om thetop.

Upon the top of the box is arranged a cover E, the purpose of which isto press the sensitized paper upon the negative placed under the lass a.For this purpose it is capable of sl ding vertically on four rods 0attached to the body of the box and around which are arranged spiralsprings c tendin to continually raise the cover E. Aroun each rod 0 isprovided a cavity 0 in which the spring takes its position when thecover is lowered to press the paper.

In order to obtain an elastic pressure, the under part of the cover E isprovided with an india rubber rectangular pocket (1, which is filledwith air under pressure, through a valve d The loweringof the-cover E,for the urpose of causing the sensitized paper to ad ere to thenegatives, is effected by means of electro-magnets e which attract thesoft iron armatures f fixed to the cover.

The electric current necessary for the i nition of the lamps and theworking of the e ectro-magnets is distributed automatically at regularintervals of time by means of a device located near the box A. Saiddevice-comprises a wooden cone 9 which rotates under the influence of asmall electric motor or clock-work h, of which the number of revolutionsand the modes of transmission as well as the shape of the insulatingstrip are calculated so that the circumference of the base of the conecorresponds to about 18 seconds, while the a ex or point corresponds to6 seconds. T e clock-work transmits rotation to the cone by belt pulleysW, 71, and belt h. Said cone 9 is covered with a copper plate, except ati, which is an insulating part; said plate is used for the rece tion ofthe current, which is brought by a iction conductor 7'. One of the twobrushes 7c k which press continually on the cone 9 sends the pressurecurrent to the pressure electro-magnets e, and the other to the lamps C.

If the cone is set in motion, the insulating part i being placed underthe brushes 1c 70, the pressing cover E is raised by its springs, andthe bromid paper, in a roll or out in sheets, can be placed in itsposition. While the cone rotates, the copper plate which covers it comesintonontact first with the brush k which sends the current in theelectro-magnet g and the armatures f are attracted and the rubber pocketcover E presses the paper on the negative. The, copper plate shortlyafter comes in contact with the rush 76, and the lamps C become ignitedso as to impress the paper, while the cone continuing its rotation, thebrush 70 touches first the insulating material i, the lamps areextinguished, the brush is enters into contact with said part i, thecurrent no longer passes seconds, such time being considered necesconductors k k ismade movable.

through the eleetro-magnet e, the tray E is lifted and the printed papercan be drawn forward.

By the foregoing, it will be seen that the ignition of the lamps 0 musttake place s 1 operation and cease a little before. That is why the twofriction contacts or brushes are placed on the same line side by side inan insulating block m, while the brush which is intended for thepressure is placed towards the base of the cone. Each brush is connectedby a trolley spring at in order to avoid any interruption in thecurrent, and said trolleys are themselves connected one with the circuitof the lamps and the other with the circuit of the pressureelectro-magnets.

In order to vary at will the duration of the burning of the lamps,according to the negatives to be printed and the rapidity of the paperused, the block m carrying the friction For this purpose it forms a nuton a screw 0, which can be rotated by means of a hand wheel p; the blockm carries a pointer m which is capable of displacement along a graduatedindex 9 which makes it possible to regulate exactly the time of exosure.

The insulating sur ace (i of the cone 9 should correspond to a period ofabout 5 sary to draw the paper forward, the time for ignition at thesmaller end of the cone may be 1 second and extend to 12 seconds at thelarger end. If a period of 5 seconds appears too long or too short,according to the skill of the operator, for the manipulation of thesensitized paper, it may be altered, either by reducing the insulatingsurface, or by altering the speed of rotation of the cone.

A modification'of the distributer is shown in Figs. 8 and 9. It is basedon the same principle as the distributer above described and consists ofa circular wooden plate 9 where the wooden and copper surfaces g, grespectively are alternated at regular intervals; the copper platesreceive the current either through a friction contact 3'" placed on theedge of the disk, or through the center at 7'.

In Figs. 8 and 9, the block m carrying the friction conductors k kconstitutes a nut working 011 the screw 0, which can be rotated by ahand wheel 1). The bromid paper which is to be used for printing thenegatives may be made of sheets cut beforehand, but it is preferable touse it in rolls and to cut the paper after the printing. With this inview, the back of the apparatus is provided with two supports providedwith bearings 1 in which is placed the rod 8 which passes through themandrel of the roll. In order that the roll may be roperly fixed at. theright point on the red the latter has two movable wedges t which enterthe ends of the ortly after the eleetro-magnets come into mandrel andare held in position by binding screws. The movable part b of the box Acarries a metallic rod it provided with two movable screws which assumethe desired position according to the width of the paper used, and serveas guides for preventing it from going to the right or the left. Thefront edge of the cover E is provided with two perforating points a,horizontally movable, corresponding to the counterparts 0, also movable,secured to the front of the box A; punctures made by these parts at eachdescent of the pressing plate E, serve as guide marks for the subsequentcutting of the paper. Such cutting can be effected immediately after theimpression, by means of a cutter w operated by a treadle and mounted ona support a: on which it can be moved forward or backward at will. Thissupport receives a bar y provided with two small metallic rodscorresponding to the perforating points, the bar being capable of beingbrought forward or backward on the support x. The cutter may be omittedor replaced by a device which would hold the paper in rolls, such paperwould then be cut at the desired points as required.

For the easy removal of the cover E the rod C may be constructed, asshown in Fig. 6, with a pivoting part 2 which may be made to go into therod for the purpose of removing the cover. The springs which raise thecover may be replaced by a system of counter Weights or any otheranalogous arrangement. It is obvious that the arrangement of coverandlamps shown in Figs. 2 and 3 can be inverted, i. (2., the lamps maybe located on the upper part and the paper will pass on 'the bottom ofthe box A.

I claim:

1. The combination of a box, a cover normally held raised therefrom, anair cushion fixed to said cover and adapted when drawn down to press thepaper upon a negative, eleetro-magnets for operating the cover, electriclamps within the box, and a distributer of electric current adapted tooperate the lamps and the said electro-magnets as set forth.

2. The combination of a box, a cover, and compression springs arrangedto normally hold the cover raised from the box, an air cushion fixed tothe said cover and adapted when drawn down to press the paper upon anegative, eleetro-magnets for operating the cover, electric lamps withinthe box, and a distributer of electric current adapted to operate thelamps and the said electro-mag nets as set forth.

3. The combination of a-box, a cover normally held raised therefrom, anair cushion fixed to said cover and adapted when drawn down to press thepaper upon a negative, electro-magnets for operating the cover, electriclamps within the box, and a distributer of electric current adapted tooperate ductivity according as the brushes are moved the lamps and thesaid electro-magnets, said towards the base or the apex of the cone.

distributer comprising a truncated cone cov- In testimony whereof heaffixes his signaered with a metallic conductor movably arture inpresence of two witnesses.-

ranged brushes bearing on the cone, a strip l ADRIEN COTTILLON. ofinsulating material arranged on the cone longitudinally from the basetowards the apex to produce varying durations of con- Witnesses:

HUNSEN A. WARD, EDMOND LECONTWIER.

